How many babies does a momma rattlesnake have at one time?

Arm circles are often effective dynamic stretches for swimmers because they

Does indrect sunlight does not pose any danger to the skin

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides. b) replication of their genomes does not involve proofreading. c) rna viruses can incorporate a variety of nonstandard bases. d) rna viruses are more sensitive to mutagens.